CVE-2019-13420: Search-Guard Search Guard

Medium severity, CVSS 5.9. EPSS: 1.2% chance of exploitation in the next 30 days.

Search Guard versions before 21.0 had an timing side channel issue when using the internal user database.

Affected products

• Search-Guard Search Guard: before 21.0 (fixed in 21.0)

Published 2019-08-13. Last modified 2026-06-17.